Louis h



L. H. PLRLIIIAII.

WHEEL.

APPLICATION FILED sEPT.23. Isle.

Patented May 13, 1919.

y UNITED STATES PATENT OFFICE.

LOUIS H. PERLMAN, 0F NEW YORK, N. Y.

' WHEEL.

Specification of LettersvPatent.

Patented May 13, 1,919.

Application led September 23, 1916. Serial No. 121,833.

To all whom it may concern:

Be it known that I, Louis H. PERLMAN,

a citizen of theUnited States, residingat` Vdemountable rim wheelsy o f the type especially adapted for useon automobiles vor like vehicles. Y

lThe object in view is the production of simple and efficient meansf'or locking a demountable rim on a wheel body',which means shall be at one and these-me time quick and easy to manipulate and inexpensive to construct. A

With this and other detail objects in view, the inventioncomprises certainl novel constructions, combinations and arrangements of parts as will be herein specified and claimed. f

In thel accompanying drawing,-' o l Figure 1 is a vertical cross section through the felly portion of a wheelembodying the features of the present invention, parts bef ing seen in elevation.

Fig. 2 is a similar section of a fragment of the parts seen in Fig. l, theA parts being shown on an enlarged scale. n

Fig. 3 is a detail, inverted plan of the tirerim-carried cap.

Fig. 4 is an end view of the wedge end of the locking bolt.

Fig. 5 is a section through the tire rim alone of a slightly modified embodiment 'of the invention. f

Fig. 6 is an inverted plan view thereof, a fragment only of the tire being seen.

Fig. 7 is a view similar to Fig. 5 of a further slight modification. f

Fig.

ment. Fig. 9 is a transverse section through a rim provided with a modified embodiment of the invention. l

Referring to the drawing by numerals, 1

nected with said felly.

8 is a kview similar to 2 on a re" duced scale of a slightly modlfied embodiindicates the wood felly of an ordinary vautomobile wheel or like vehclewheel which is` provided, with the usual felly band or fixed rim2 having thesupporting stop flange at its inner edge.

The tire'arrying rim 4 surrounds the band 2 and is of sufficiently greater diameterto be slightly spaced therefrom while being of suiciently small diameter to rest against the flange 3;

' At intervals about the circumference of Ythe felly'l are locking devices for locking .the 'rime against the flange 3 and for tensioning the rim in position. The number of such locking devices may be varied `'ac- "cording to the size of the wheel and the serv-ice to ybe rendered. For ordinary purposes four or five such locking means on the-average lsize 'automobile wheel will be `found..ample. Each of said locking devices 1s 'identical with that seen inFigs. 1 and 2 of the drawing, and consists of a radially disposed1 bolt 5 having at its outer en d a wedging tip formed by tapering the tip to produce 'substantially a truncated cone 6,'

the cone being hollowed by a tapering axial The bolt 5 is threaded through the Vfelly -1` and band 2, and is preferably Aeffectively anchored in the wheel body through -the employment of a threaded sleeve 8 extending radially through the .band 2 and fel'lyf land clamped therein by a head 9` atthe'outer end of the sleeve overlapping portions of the band 2 and a nut 10 at the inner end of the sleeve engaging the inner face ofthe felly 1, or a wear plate congages the bolt rand the nut 10 for locking both ofsaid elements against unintentional release.

For each of the locking devices on the dially inward projection 15 is formed intej soyV A lock nut 11 enf gral with cap 12 and extendscentrally of the recess 14 in position to enter the recess 7 as the cone 6l is entering the recess 14. The inclined walls of the cone 6, recess 14, projection 15, and recess 7 correspond in pitch so that the outer terminal portion of screw 5 may engage portions of the cap 12 at two points, as indicated clearly in Fig. 1, during the operation of locking the rim 4 in position. The inclination of the contactin walls during operation causes the termina' portion of bolt 5 to e'ect a wedging action on the rim 4 and to thrust the same axially against the ange 3. The parts are roportioned to effect this result, as clear y indicated, by the relative location of the parts in Fig. 2, which shows the rim in the pov` sition assumed when applied manually on o.engagement thereof by f only a loose the wheel before the operation of the bolt 5. It should be noted also that the projection 15 may be utilized as the stress-distributing member without the coperation of the outside walls of the bolt or the wall of the recess 14. To cause the parts to have this effect, it would be necessary to increase the size of the recess 14 sufiiciently to prevent the tapered outer portion of the bolt 5, or to suiiiciently reduce said tapered outer portion to prevent contact with the outer wall of recess 14.

I In operation, the bolts 5 are withdrawn to the position indicated in Fig. 2 for enabling the rim 4 to be moved axially manually off of the wheel for interchange of tires or other purposes. After such interchange the rim 4 is replaced axially onto the wheel, it being understood, of course, that after the usual practice in the manipulation of demountable rims the valve stem (not shown) is inserted and the rim rocked into place Vwhere it rests against the flange 4. The parts are then in the position indicated in Fig. 2. The contact between the rim 4 and flange 3 is at that time only such asis obtainable by the manual application of the rim, which is that there are 'but a few points of actual contact between the rim and flange. -The bolts 5 arelthen turned outward until the inclined .walls thereofengage the inclined walls of -t'he cap 12 and wedge the rim 4 firmly into contact with the iiange 3. The

actual amount of axial movement is very slight but the result is essential to the successful operation of the demountable rim, because with a loose contact between rim 4 and fiange 3 the rim would be noisy and would wear at the points of contact, but with the more intimate contact produced by the forceful axial thrust of the rim incident to l the wedging action of the locking elements relative movement of the contacting parts is eliminated and noise and wear are consequently eliminated.

contact by which is meant be arranged than as illustrated, and in this form the cap preferably has its flange elongated in an axial direction across the rim 4.

The cap may also be secured by rivets 17, 17, as seen in Fig. 7, the cap 15" therein being shown as flanged similarly to the cap seen in Figs. 5 and 6.

AIn Fig. 8 is seen parts corresponding with those seen in Fig. 2, the bolt 5n however having its tip 6JL formed exteriorly cylindrical, the Walls of the recess 7 of the tip being inclined the same as the walls of recess 7. Cap 12a in this embodiment is substantially identical with cap 12.

In Fig. 9 is illustrated a further embodiment of that portion of the invention appertaining to the demountable riin. In this figure' the rim l4" is'formed with an integral pression 15b corresponding in location and function to the projection 15 of the structure seen in Fig. 1. The projection 15b is stamped from the bod of the rim 4b and the necessity for detacha le connection is thus obviated. The depression left in the outer face of the rim 4 will not be suicient to injure an inner tube, and usually a strip of canvas or other fabric is placed about the outer face of the demountable rim in a manner to receive the inner tube of the tire and prevent the same from striking against the metal of the rim.

What I claim is 1. In a wheel structure of the class described, the combination with a wheel body and a demountable rim therefor, of securing means for the rim, comprising a locking bolt having ascrew threaded engagement with the wheel body and having an axial conical recess and a conical projection on the demountable rim adapted to enter said recess, the projection and bolt being located relative to each other for wedging the rim lt)o dits final operative position on the wheel 2. In a wheel structure of the class described, the combination with a wheel body needs y B 8. In e demountable rim structure, a. cap ally inwardly extending tapered projection 1o connected thereto end formed into cup adapted to receive wedging locking means. shape, the cap `having a. projection extend- In testimony whereof I aix my signature ing into the space surrounded by the cup, in presence of-two witnesses.

'5 the said projection being adapted to receive wedgefloeking means. LOUIS H PERLMAN'- 4. In a. demountable rim structure, a dfe- Witnesses: mountable-rim and a cap connected thereto, 5 I. B. LEIBsoN, the said.' cap being formed with radip 0. W. Mon'.

00pm of this )stent my be obtained for ive eentl each, by addressing time "Commissioner of latenti.

l walhlngtomn. 

